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  • 3M™ Hookit™ Blue Abrasive Discs 321U
  • 3M™ Hookit™ Blue Abrasive Discs 321U

    34  Products
    • A best-in-class abrasive for the entire repair and paint prep process
    • Engineered ceramic mineral blend is balanced for maximum abrasive performance in its class
    • Multi-hole pattern delivers excellent dust extraction and reduces loading
    • Anti-loading coating prevents dust and debris from clogging the cutting surface
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    Diameter
    Grade
    34 Products Available
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    Specifications
    Attribute Name
    Value
    Applications
    Clear Coat Blending, Clearcoat, Coarse Sanding, E-Coat Sanding, Featheredging, Filler Shaping, Fine Finishing, General Purpose Sanding, Intermediate sanding, Machine Sanding, Multi-Purpose Sanding, Paint Preparation, Paint Removal, Paint Sanding, Paint Stripping, Primer Sanding, Random Orbital Sanding, Refining Scratches, Sanding, Sanding Filler
    Attachment Type
    Hookit™
    Backing Material
    Paper
    Backing Weight
    C Weight
    Brand
    3M™
    Case Quantity
    4 Boxes per Case
    Color
    Blue
    Diameter
    3 Inch, 5 Inch, 6 Inch
    Diameter (Metric)
    127 mm, 152 mm, 76 mm
    Form Type
    Clean Sanding
    Grade
    120, 150, 180, 220, 240, 320, 40, 400, 500, 600, 80, 800
    Mineral Type
    Ceramic Aluminum Oxide
    Number per Inner
    50 per Carton
    Packaged Form
    Boxed
    Performance Level
    Better
    Product Form
    Abrasive Disc
    Sanding Method
    Hand, Machine
    Vacuum Support
    Yes
    Wet or Dry
    Dry
    Product Details
    • A best-in-class abrasive for the entire repair and paint prep process
    • Engineered ceramic mineral blend is balanced for maximum abrasive performance in its class
    • Multi-hole pattern delivers excellent dust extraction and reduces loading
    • Anti-loading coating prevents dust and debris from clogging the cutting surface
    • Upgraded resins improve durability and finish
    • Hookit™ attachment makes changing discs fast and easy

    Our 3M™ Hookit™ Blue Abrasive Disc 321U delivers best-in-class performance at every stage of paint prep and body repair. Premium aluminum oxide mineral abrasive is blended with ceramic grain for a full range of automotive sanding applications. Specially-designed multi-hole pattern reduces loading, extends disc life and aligns with most backup pads. Hookit™ attachment makes disc changes easy.

    Part of our full line of 3M™ Blue Abrasives, the 3M™ Hookit™ Blue Abrasive Disc is engineered for best-in-class cut, life and efficiency across your entire shop.
    3M™ Blue Abrasives are engineered with a ceramic mineral blend that cuts through paint and body filler with consistent results every time
    Best-in-Class Performance in Every Grade
    Part of our full line of 3M™ Blue Abrasives, the 3M™ Hookit™ Blue Abrasive Disc is engineered for best-in-class cut, life and efficiency across your entire shop. The disc features a tough ceramic blended with premium aluminum oxide mineral for just the right balance. 3M™ Blue Abrasives deliver consistently excellent results in a minimum amount of time, on jobs ranging from aggressive paint removal and fresh filler sanding to blend preparation and sanding primer. Discs are available in a wide range of sizes and grades.

    Dust Extraction Features Enhance Performance and Disc Life
    The multi-hole pattern on this disc is specially designed to capture dust and keep it away from the abrasive surface. This specially-designed hole pattern reduces loading and extracts dust more efficiently compared to standard 6- or 7-hole disc configurations. It includes alignment guides across the disc, making it fast and easy to align with nearly any backup pad. The mineral blend on the 3M™ Hookit™ Blue Abrasive Disc is bonded using upgraded resins for enhanced durability. An anti-loading coating helps keep dust from gathering between the abrasive grains for a faster cut and for consistent performance throughout the life of the disc.

      3M™ Hookit™ Attachment 3M™ Stikit™ Attachment

    Grade
    6"
    50 Discs/Box
    4 Boxes/Case
    5"
    50 Discs/Box
    4 Boxes/Case
    3"
    50 Discs/Box
    4 Boxes/Case
    Sheet Roll†
    2-3/4"(W) x 13 yd(L)
    4 Rolls/Case
    6"
    100 Discs/Roll
    5 Rolls/Case
    Sheet Roll
    2-3/4"(W) x 30 yd(L)
    5 Rolls/Case
    40 36170 N/A N/A N/A 36200* 36215**
    80 36172 36157 36142 36187 36202* 36217**
    120 36174 36159 36144 36189 36204 36219
    150 36175 36160 36145 36190 36205 36220
    180 36176 36161 36146 36191 36206 36221
    220 36177 36162 36147 36192 36207 36222
    †Kiss cut at 69mm splits for multiple size formats. * PN 36200 = 25 Discs/Roll
    **PN 36215 = 10 yd (L)
    PN 36202 = 50 Discs/Roll
    PN 36217 = 20 yd (L)

      3M™ Hookit™ Attachment 3M™ Stikit™ Attachment

    Grade
    6"
    50 Discs/Box
    4 Boxes/Case
    5"
    50 Discs/Box
    4 Boxes/Case
    3"
    50 Discs/Box
    4 Boxes/Case
    Sheet Roll†
    2-3/4" (W) x 13 yd (L)
    4 Rolls/Case
    6"
    100 Discs/Roll
    5 Rolls/Case
    Sheet Roll
    2-3/4" (W) x 45 yd (L)
    5 Rolls/Case
    240 36178 36163 36148 36193 36208 36223*
    320 36180 36165 36150 36195 36210 36225
    400 36181 36166 36151 36196 36211 36226
    500 36182 36167 36152 36197 36212 36227
    600 36183 36168 36153 36198 36213 36228
    800 36184 36169 36154 N/A 36214 N/A
    †Kiss cut at 69mm splits for multiple size formats.   **PN 36223 = 30 yd (L)

    The Hookit™ attachment system has a hook-and-loop feature which makes disc attachment, removal, and re-attachment clean and easy.
    Brushed nylon loop backing
    Our Hookit™ Attachment System
    The Hookit™ attachment system has a hook-and-loop feature which makes disc attachment, removal, and re-attachment clean and easy. It also facilitates use and re-use of the disc for maximum product life. Hookit™ discs have a brushed nylon loop backing of the type most commonly used in everyday hook-and-loop applications. 3M™ Hookit™ disc pads (sold separately) feature hooks which grip the brushed nylon loop backing. It's simple: just attach the disc and start sanding. The disc removes just as cleanly and easily. The Hookit™ system is designed for work spaces and applications where adhesive backed discs may become contaminated by dust, dirt, or debris.

    Better Science for Better Sanding from 3M
    Our 3M™ Blue Abrasives family is designed as a cost-effective, high-performance upgrade for any sanding application in body repair and paint preparation. From its balanced, engineered mineral blend to its multi-hole pattern for dust extraction, our 3M™ Hookit™ Blue Abrasive Disc is another way that 3M applies science to deliver best-in-class performance for professionals in paint preparation and auto repair.

    Learn More about 3M™ Blue Abrasives (PDF, 749.11 Mb)
    Discover More 3M™ Automotive Aftermarket Products (PDF, 68.63 Mb)

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